Impact of inhomogeneities on slowly rolling quintessence: implications for the local variations of the fine-structure constant

@article{Giani2021ImpactOI,
  title={Impact of inhomogeneities on slowly rolling quintessence: implications for the local variations of the fine-structure constant},
  author={Leonardo Giani and Emmanuel Frion and Oliver Fabio Piattella},
  journal={Classical and Quantum Gravity},
  year={2021},
  volume={38}
}
We study how the evolution of a dark energy quintessence fluid is modified by the presence of a matter inhomogeneity. To do so, we study linear perturbations of a flat FLRW background containing dust and a slowly rolling scalar field. Under the assumptions of spherical symmetry and a static density contrast, i.e. δ˙=0 , we obtain simple analytical solutions for perturbations in the matter and dark energy-dominated epochs. As a consequence, we show that perturbations of the scalar field, if a… Expand

References

SHOWING 1-10 OF 91 REFERENCES
Phys
  • Rev. D25, 1527
  • 1982
'I.
TLDR
Patients emphasised 'having more energy' when reporting improvements in their physical health following treatment and their desire to help other patients to receive treatment was connected to their experience of the services that they received and their perceived health outcomes. Expand
A new era of fine structure constant measurements at high redshift
New observations of the quasar HE0515$-$4414 have been made using the HARPS spectrograph on the ESO 3.6m telescope, aided by the Laser Frequency Comb (LFC). We present three important advances forExpand
Four direct measurements of the fine-structure constant 13 billion years ago
Fine-structure constant measurements 13 Ga ago, plus lower redshift data, test space-time variation of a fundamental constant.
He et al. Reply.
Mon
  • Not. Roy. Astron. Soc. 500, 1
  • 2020
Precision gravity tests and the Einstein Equivalence Principle
General Relativity is today the best theory of gravity addressing a wide range of phenomena. Our understanding of physical laws, from cosmology to local scales, cannot be properly formulated withoutExpand
Prog
  • Part. Nucl. Phys. 112, 103772
  • 2020
Phys
  • Rev. D 99, 043531
  • 2019
Probing spatial variation of the fine-structure constant using the CMB
The fine-structure constant, $\alpha$, controls the strength of the electromagnetic interaction. There are extensions of the standard model in which $\alpha$ is dynamical on cosmological length andExpand
...
1
2
3
4
5
...